Biography
Dr Ho Yau Bong is an Associate Consultant and Team Leader of Assisted Reproductive Technology Unit in United Christian Hospital in Hong Kong. He has performed a wide range of fertility surgeries, advanced laparoscopic surgeries and advanced hysteroscopic surgeries including laparoscopic myomectomy and total laparoscopic hysterectomy for complex cases
Abstract
This case illustrates the importance of having active gynaecological intervention for patients with sudden onset of anti-NMDA receptor encephalitis with the presence of ovarian dermoid cysts. A 18-year-old Chinese lady was presented with acute onset of confusion, development of unsteady gait, slurring of speech and gradual deterioration of Glasgow Coma Scale. Lumbar puncture was performed and cerebrospinal fluid revealed mild leukocytosis and a slight elevation in protein. CT and MRI brain, septic workup and toxicology screening were all normal. Patient was treated as viral meningoencephalitis with Acyclovir and Antibiotics. Nevertheless, she developed episodes of tonic-clonic seizures requiring intubation and admission to Intensive Care Unit. Serum auto-antibody titre was checked and anti-NMDA receptor antibody was positive. Diagnosis of anti-NMDA receptor antibody encephalitis was made. She was treated with Prednisolone, plasmapheresis, IVIG and Rituximab. CT abdomen and pelvis scan revealed a 4x3x2cm right ovarian teratoma. Emergency laparoscopic right ovarian cystectomy was done and histology confirmed the presence of mature cystic teratoma. Her conscious level gradually improved 5 weeks after the operation and she was discharged 13 weeks afterwards. Subsequent follow-up showed she has a full recovery with no seizure nor other functional deficits. Anti-NMDA receptor antibody encephalitis was first discovered in 2007 and around half of the cases were associated with ovarian teratoma. It is thought that this condition can be caused by auto-antibodies produced by cross-reactivity with NMDA receptors in teratomas. Ovarian cystectomy can improve this condition as it can eradicate the source of auto-antibodies.
Biography
Dr MY Chan is an Associate Consultant in United Christian Hospital in Hong Kong. She has special interests in advanced laparoscopic surgery and reproductive medicine. She performed wide range of advanced laparoscopic surgery including laparoscopic myomectomy and total laparoscopic hysterectomy for large uterine sizes. She is also a trainer for laparoscopic courses in Hong Kong.
Abstract
Madam Wong was a 43-year-old parity 2 woman, who had laparoscopic myomectomy performed on 25 April 2014 for a 6 x 7 cm anterior wall intramural fibroid. The fibroid was morcellated in the peritoneal cavity laparoscopically and retrieved. The uterus was 6 weeks in size after the operation. She complaint of on and off lower abdominal pain in June 2017. On physical examination, there was a 18 weeks’ size pelvic mass. Ultrasound scan showed three well defined heterogenous hypoechoic mass at the left adnexa and lower abdomen, measuring 5 x 6 x 7cm, 4 x 5 x 4cm and 5 x 8 x 8cm. Tumor markers were checked and showed an elevated Ca 125 level to 167 units/mL. A computer tomography scan was done showing a 4 cm pedunculated fibroid and two heterogenous shadow in the pelvis, both were separated from uterus, suspicious of peritoneal metastasis. USG-guided biopsy was performed on 1 December 2017 and the histology showed smooth muscle tumor. She was given Ulipristal afterwards. MRI was done one month later, showing the known three pelvic masses were decreasing in size. The provisional diagnosis was disseminated peritoneal leiomyomatosis. She finally had total abdominal hysterectomy with bilateral salpingo-oophorectomy done in March 2018. A 4x4 cm pedunculated soft tissue mass was seen arising from the back of uterus and buried in the left para-rectal space; another 10 x 10 cm soft tissue mass with cystic changes located around mid-portion of the thickened round ligament; another 4x4cm soft tissue mass was at the fundus of uterus. Frozen section showed spindle cell tumor. Bilateral fallopian tubes and ovaries were normal. The final histology showed leiomyoma, confirming the diagnosis of disseminated peritoneal leiomyomatosis. Disseminated peritoneal leiomyomatosis occurs in less than 1% of all patients who underwent a prior surgery with morcellation. It is postulated that the development of disseminated peritoneal leiomyomatosis is by seeding in various peritoneal sites and it often occurs two years after the primary surgery. Our case illustrates the importance of using in-bag morcellation of all fibroids. Not only it can avoid the spreading of a malignant tumour, but it can also avoid the occurrence of disseminated peritoneal leiomyomatosis.